Isaac j



i 106. oourosmous, COATING 0R PLASTIC. i

ISAAC J. WYMAN, OF-NEW YORK, N Y.

Letters Patent No. 111,295, dated January 24, 1871.

IMPROVEMENT IN PAINTS FOR SHIPS BOTTOMS.

The Schedule referred to in theseLetters Patent and making part of the same.

LISAAG J. WYMAN Of the city, county, and State count of the difficnlty of subdividing it by trituraof New York, have made a new and useful Imp'rovetion. ment in Fault for the Bottoms of Maritime Ves- For this purpose it is best to use a soluble salt of sels, and I hereby declare the following language copper, as the sulphate, chloride, acetate, or nitrate, is a full and exact description and example thereof. but I prefer theslflphate, on account of economy. Thevalue and nature of. this improvement consist Into a solution of sulphate or other soluble salt of in the use ofmetallic copper in a fine ,state of divicopper I immerse iron wires or rods, and agitate the sion, mixed with boiled or burned linseed-oil, and solution with the rods-by alternate rotary motions, other substances which impart a body to the mass, until all the copper is precipitated in the form of a for the purpose of forming a paint for the bottoms of tiplemfleil. Y r vessels that willprevent the adhesion thereto of barthen wash the precipitate with a large quantity. nacles or other matter whichnsually attaches itof water to remove all soluble matter, and dryit out self -to vessels bottoms to render them what is of contact with the air. 7 termed foul. Having now procured the metallic copper, I. mix it? It has been long observed that vessels sheathed with any burned or boiled-oil paint possessing suffi-"f;.r with copper do not foul. cient body, in any desirable proportions, and pass it 'l It is also well known tochemists that metallic cop; through a pai np-mill. l per immersed in sea-water: is attacked by the salts The product of this last grinding constitutes the; contained therein, with the formation of a small quanpaint herein deseribedfand is ready for application tity of dichloride of copper upon theexternal surface to the bottoms of iron-a d wooden maritime vessels. of said copper, which dichloride of copper is a very This product of paint also applicable to the roofs soluble salt, and'is at once dissolved by the water of of buildings, or would "be serviceable wherever a paint the sea, while the newly-exposed surface isagain atis required in a position exposed to severe weather. tacked with the formation of more dichloride of cop- As this improvement does not consist so much in a per, 8m. T process as in a product which is easily recognized when This salt, dichloride of copper, is a very powerful met with, I do not claim a paint made by combining escharotic to all living animal and vegetable tissues, copper ore or oxide of copper with tar or bituminous and as it is formed upon the exterior surfaces of the compounds, as such is known; but copper and the copper is attached to the vessel, no ad- What, I claim as my invention or vimprovement, 7 hesion of vegetable or animal substances can be made and desire to secure by Letters Patent, isl thereto, because the dichloride cauterizes the vege- A paint, having as one of its ingredientsilnetallic table matters, and the animals or insects possessing copper, as herein substantially described, and for the life and sensation pr efer to keep away from it on thepurposes herein setforth. i

' Witnesses: ISAAC J. WYMAN.

principle of incompatibility.

In preparing the copper ii is necessary to procure AUGUSTUS LELAND, the samein a very minute'state of division, on ac- WM. S. SHERWOOD. 

